Combined polyether, polyurethane foam and its preparation method and application of soundproof door

A technology of polyurethane foam and combined polyether, which is applied in the application field of combined polyether, polyurethane foam and its preparation and sound insulation doors, which can solve the problems of low sound absorption coefficient, achieve good adhesion, good sound insulation effect, and increase openings rate effect

Active Publication Date: 2019-05-03
SHANGHAI DONGDA POLYURETHANE
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a combination of polyether, polyurethane foam and its preparation method and the application of soundproof doors in order to overcome the defect of low sound absorption coefficient of polyurethane foam in the prior art.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combined polyether, polyurethane foam and its preparation method and application of soundproof door
  • Combined polyether, polyurethane foam and its preparation method and application of soundproof door
  • Combined polyether, polyurethane foam and its preparation method and application of soundproof door

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1

[0049] The parts by weight of the components combining polyether and isocyanate in Examples 1-3 are specifically shown in Table 1.

[0050] Table 1

[0051]

[0052]

[0053] (1) Preparation of combined polyether

[0054] Mix other components except isocyanate in a stainless steel mixing kettle for 45 minutes, and stir evenly.

[0055] (2) Preparation of polyurethane foam

[0056] Polyurethane foam can be prepared by mixing and reacting the combined polyether and isocyanate in proportion at 22°C.

Embodiment 4

[0058] The polyurethane foam prepared in Examples 1-3 is directly injected into the door body to obtain a soundproof door filled with the polyurethane foam of the present invention.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a premixed polyether, and a polyurethane foam, a preparation method thereof and an application thereof in a sound insulation door. The premixed polyether comprises polyether polyol A, polyether polyol B, a silicone foam stabilizer, a catalyst, water and triethyl phosphate, and is characterized in that the silicone foam stabilizer is B-8523 silicone foam stabilizer produced by Evonik Degussa Specialty Chemicals (Shanghai) Co., Ltd. The polyurethane foam manufactured from the premixed polyether significantly improves a sound absorption coefficient, prepares the sound insulation door which can achieve good sound insulation effects, and thereby achieves the purpose of reducing noise pollution.

Description

technical field [0001] The invention relates to a combination of polyether and polyurethane foam, a preparation method thereof and the application of a soundproof door. Background technique [0002] Noise is a source of pollution, and the accelerated pace of urbanization inevitably aggravates the degree of noise pollution. The role of the soundproof door is also highlighted. The soundproof door is suitable for places with high noise requirements, such as recording studios for broadcasting studios, studios, control room broadcasts, movies, television and audio products. With the improvement of people's quality of life, developers pay more and more attention to the sound insulation effect of the wall during the building construction process at this stage, but in the later stage, the owners will inevitably put forward higher requirements for the sound insulation effect of the house during the renovation process. Traditional wooden doors are mostly made of composite boards or i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08J9/08C08G101/00
CPCC08G18/4804C08G2350/00C08G2110/0083
Inventor 李明王青林许景龙陈勤
Owner SHANGHAI DONGDA POLYURETHANE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap